Water Quality Evaluation and Cause Analysis of Shanghai Dianpu River
In this paper,single factor evaluation and Nemerow comprehensive pollution index method were used to evaluate the water quality of Dianpu River in Shanghai in dry and wet seasons.The results of single factor evalua-tion showed that the Qishen Road section of Dianpu River did not meet the water quality target in dry season,and the Nangang Bridge and Qishen Road section did not meet the water quality target in wet season.The Nemerow comprehensive pollution index in dry season is greater than that in dry season,and the water quality in dry season is worse than that in wet season.The water quality along the river becomes worse,and the water quality of the downstream Qishen Road section is the worst,which is quite different from the target of the water quality func-tional area.Through principal component analysis,it is preliminarily identified that the water pollution source of Dianpu River is the comprehensive pollution source of agricultural non-point source pollution and urban produc-tion and life.TP,NH3-N,EC and turbidity are the main contribution factors of agricultural non-point source pollu-tion,and EC,CODMn and DO are the main contribution factors of urban production and life pollution sources.
Dianpu Riversingle factor evaluationNemerow comprehensive pollution index methodprincipal component analysis
NETL
NSTL
万方数据
维普
